When forced to summarize the general theory of relativity in one sentence: Time and space and gravitation have no separate existence from matter.

Science can only ascertain what is, but not what should be, and outside of its domain value judgements of all kinds remain necessary.

I am satisfied with the mystery of life's eternity and with a knowledge, a sense, of the marvelous structure of existence - as well as the humble attempt to understand even a tiny portion of the Reason that manifests itself in nature.

Either CS (coordinate system) could be used with equal justification. The two sentences: the sun is at rest and the earth moves, or the sun moves and the earth is at rest, would simply mean two different conventions concerning two different CS

The contemplation of this world beckoned as a liberation (...)The road to this paradise was not as comfortable and alluring as the road to the religious paradise; but it has shown itself reliable, and I have never regretted having chosen it.

My primary process of perceiving is muscular and visual.

The future is not a gift-it is an achievement.